<!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8">
    <title>Hello Calculator!</title>
  </head>
  <body>
    <h1>Hello Calculator!</h1>
    <p> We are using Node.js <script>document.write(process.versions.node)</script>,
    Chromium <script>document.write(process.versions.chrome)</script>,
    and Electron <script>document.write(process.versions.electron)</script>.</p>
    <p>Input something like <code>1 + 1</code>.</p>
    <p>This calculator supports <code>+-*/^()</code>, 
    whitespaces, and integers and floating numbers.</p>
    <input id="formula" value="1 + 2.0 * 3.1 / (4 ^ 5.6)"></input>
    <div id="result"></div>
  </body>

  <script>
    require('./renderer.js')
  </script>
</html>
